The new toll lanes are expected to open next week on parts of I-85 through Gwinnett and DeKalb counties northeast of Atlanta.

A state traffic and revenue study says the regular lanes are expected to gain up to 90 new vehicles per lane, per hour during rush hour.

State Road and Tollway Authority Director Gena Evans said the toll project will give drivers another option if they're willing to pay the tolls.

Also, SRTA officials told 11Alive's Matt Pearl that there will be a grace period for drivers in the early stages of enforcement of the express lanes. They would not say how long that grace period would last.

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